docs: def IE_Dispatcher(s):
    """Choose the correct Information Element class."""
  
    if len(s) < 1:
      return Raw(s)
  
    # Get the IE type
    ietype = ord(s[0])
    cls = ietypecls.get(ietype, Raw)
  
    # if ietype greater than 128 are TLVs
    if cls == Raw and ietype & 128 == 128:
      cls = IE_NotImplementedTLV
  
    return cls(s)